Configuration

Function Prompt

Selection or Range of

 

 

Parameter

Lower Display

Setting

 

 

Definition

 

 

Upper Display

 

 

 

English

Numeric

English

Numeric

 

 

 

 

Code

 

Code

 

 

 

 

 

AUTO

3

 

TO AUTO—AUTOMATIC MODE, LAST SP—The

 

 

 

 

 

controller will return to the automatic mode and the

 

 

 

 

 

last setpoint used before shed.

 

 

 

 

 

 

 

SHD_SP

1010

 

 

 

SHED SETPOINT RECALL

 

 

 

 

 

Note: If SHEDENAB=DISABLE, this prompt will not

 

 

 

 

 

be configurable.

 

 

LSP

0

 

TO LSP—Controller will use last local or remote

 

 

 

 

 

setpoint used.

 

 

CSP

1

 

TO CSP—When in “slave” mode, the controller will

 

 

 

 

 

 

 

 

 

 

store the last host computer setpoint and use it at

 

 

 

 

 

the Local setpoint. When in “monitor” mode, the

 

 

 

 

 

controller will shed to the last UDC Local or

 

 

 

 

 

Remote setpoint used, and the LSP is unchanged.

 

 

 

 

 

 

 

UNITS

1011

PCT

0

 

PERCENT

 

 

EGR

1

 

ENGINEERING UNITS

 

 

 

 

 

 

 

CSRATIO

1012

-20.0 to 20.0

 

 

COMPUTER SETPOINT RATIO—Computer

 

 

 

 

 

setpoint ratio.

 

 

 

 

 

 

 

CSP_BI

1013

-999 to 9999

 

 

COMPUTER SETPOINT RATIO—Computer

 

 

 

 

 

setpoint ratio in Engineering Units.

 

 

 

 

 

 

LOOPBK

1014

DIS

0

 

LOCAL LOOPBACK tests the communications

 

 

ENAB

1

 

hardware.

 

 

 

 

 

DISABLE—Disables the Loopback test.

 

 

 

 

 

ENABLE—Allows loopback test. The UDC goes

 

 

 

 

 

into Loopback mode in which it sends and receives

 

 

 

 

 

its own message. The UDC displays PASS or FAIL

 

 

 

 

 

status in the upper display and LOOPBACK in the

 

 

 

 

 

lower display while the test is running. The UDC

 

 

 

 

 

will go into manual mode when LOOPBACK is

 

 

 

 

 

enabled with the output at the Failsafe value. The

 

 

 

 

 

test will run until the operator disables it here, or

 

 

 

 

 

until power is turned off and on.

 

 

 

 

 

 

The instrument does not have to be

 

 

 

 

 

ATTENTION

 

 

 

 

 

connected to

the external communications link in

 

 

 

 

 

order to perform this test. If it is connected, only

 

 

 

 

 

one instrument should run the loopback test at a

 

 

 

 

 

time. The host computer should not be transmitting

 

 

 

 

 

on the link while the loopback test is active.

 

 

 

 

 

 

 

4/07

UDC2500 Universal Digital Controller Product Manual

75

Page 89
Image 89
Honeywell UDC2500 manual Shdsp, Shed Setpoint Recall, Percent, Engineering Units, Csratio, Cspbi, Loopbk